Bottle stopper



Patented Aug. 9, 1927.

UNITED STATES PATENT oFiucE.

VITALIS M. IKIOSS, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR F ONE-HALF TO EDWARD W. TERSH, OF MINNEAPOLIS, MINNESOTA.

BOTTLE STOPPER. n

Application led November 30, 1925-. Serial No. 72,190.

My invention pro-vides an extremely simple and e'licient stopper for milk b ottles and the like and, generally stated, consists of the novel construction and arrangement of parts hereinafter described and defined in the claim.

Milk bottle Stoppers now in general use are made of stii paper and are usually 1n the form of simple flat discs. The difficulty of removing these Stoppers without causing the milk, cream or the like to be splashed is well known. A tool of some kind, such as a sharp instrument, is required to puncture the stoppers or pry the same out of their seats. My invention, at practically no additlonal. cost, provides a stopper formed with a rib or flange that normally affords an extremely good nger piece for removing the stopper and stiffens the stopper diametrically.

The invention is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several views. y

Referring to the drawings: U

Fig. l is a perspective showing the improved stopper removed;

Fig. 2 shows the stopper flattened out or in the form in which it is first made when stamped or cut from the sheet of paper; u

Fig. 3 is a plan or top view of a milk bottle with one of the improved stop pers applied thereto; and Q Fig. 4 is a view partly 1n elevation. and partly in section on the line 1 -4 of Fig.

The milk bottle 5 has the usual flanged neck formed with a 'stopper seat 6. The stopper, which, as indicated, is preferably made from stiff paper, when completely formed is circular, but when primarily cut from the sheet, it comprises two semi-circular portions 7fconnected by intermediate portions 8, the endyedges of which converge inwardly from bending lines 9 toward a central bending line l0. The lines 9 and l0 represent creases that adapt the blank to be readily bent into the form best shown in Fig. l, by reference to which it will be noted that the portions 8 are pressed together and turned upwardly so that they then form a raised diametrical web or flange that may be readily gripped bythe fingers and which,

moreover, stiifens the stopper diametrically. The stopper, when formed as shown in Fig. l, will fit the seat 6 in the bottle neck, just as does the ordinary stopper. The central rib will preventthe stopper from being bulged inwardly by too great pressure, and it affords the most convenient kind of device to be gripped by the fingers for the purpose of pulling the stopper out of the bottle. In View of the V shaped reentrant lines at the end of the intermediate portion formed between diametrically formed lines 9 the rib formed in the completed stopper will have beveled ends that incline downwardly and join the terminal lines of. the semi-circular end portions. This is very important because when the stopper is applied in the bottle, the pressure required to form a liquidtight joint will be made not only completely around the edgev of the stopper, but at the place where the two semi-circular portions are pressed together. In the present instance ithas been found that if the upstanding rib has parallel end lines, a certain part of the pressure will be taken on the ends ofthe rib and liquidtight joints will not be formed at the base of the rib or where the endsof the two semi-circular portions are pressed together. When the central rib is gripped by the fingers and pulled upward, the semi-circular portion 7 will be bulged upwardly and may be easily withdrawn from the seat. rlhe stopper is, therefore, eicient when applied and may be very readily removed without any danger whatever of splashing the milk, cream or other contents of the bottle.

It will be noted that, in View of the fact that the end edges of the intermediate portions 8 of the blank converge inwardly, the

diametrical rib, when formed, will have end portions that converge upwardly so that they clear the neck of the bottle except where they join with the flat semi-circular portions of the stopper.

What I claim is:

A milk bottle stopper formed from a single piece of stiff material and comprising two semi-circular portions and an intermediate rib-forming portion, said portion having folding creases, one extending centrally thereof and two extending where said shaped lines whereby the ends of seid rib will be downwardly inclined and joined to the terminal lines of seid semi-circular porw tions.

In testimony Where-of l aix my signature.

VITALIS M. KLOSS. 

